12890331 has 12 divisors (see below), whose sum is σ = 18898152. Its totient is φ = 8464896.

The previous prime is 12890323. The next prime is 12890363. The reversal of 12890331 is 13309821.

12890331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12890331 - 2³ = 12890323 is a prime.

It is a super-2 number, since 2×12890331² = 332321266579122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12890295 and 12890304.

It is not an unprimeable number, because it can be changed into a prime (12890321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10086 + ... + 11291.

It is an arithmetic number, because the mean of its divisors is an integer number (1574846).

Almost surely, 2^12890331 is an apocalyptic number.

12890331 is a deficient number, since it is larger than the sum of its proper divisors (6007821).

12890331 is a wasteful number, since it uses less digits than its factorization.

12890331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21450 (or 21447 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12890331 is about 3590.3107107881. The cubic root of 12890331 is about 234.4703993503.

It can be divided in two parts, 128903 and 31, that multiplied together give a palindrome (3995993).

The spelling of 12890331 in words is "twelve million, eight hundred ninety thousand, three hundred thirty-one".